2004 John Deer Buck Utility ATV 500, 500EX and 500EXT Service Manual, Page 140Get this manual
The MPEM also controls the accessories such as the cluster display, headlight intensity dimming and taillightThe module doesn't contain fuses since it is not easily accessible to the userThe module includes an internal overload protection device to supply circuitsAn external fuse (in the fuse block) is used to protect the module supply circuitThe module does not control the loads connected directly to the battery, such as the fan, the DC accessory outlet, brake light and the optional winch The electrical system consists of different sub-systems where some are inter-related: MPEM (Multi-Purpose Electronic Module Charging System Starting System Ignition System Electric Shift System Gauge and Accessories